i am new to mtg and the concept of first strike and double strike confuses me, how does the damage work with first strike with the damage delt. Double strike is an evergreen keyword ability that allows a creature to deal combat damage twice per combat phase — once during the first combat damage step Last Used ‎: ‎ Evergreen. In the new Dark Ascension expansion, the card Markov Blademaster has double strike. Stormkirk Captain gives all other Vampires first strike.